Soc 17

Question 1

Use of respiratory system

Answer 1

To get oxygen into the body.
To remove carbon dioxide from the body.
In sport or physical activity, the respiratory and cardiovascular systems must work closely together to keep the body supplied with oxygen.

Question 2

Inspiration

Answer 2

Breathing in (20% oxygen and 0.4% CO2)

Question 3

Exhalation

Answer 3

Breathing out (16% oxygen and 4% CO2)

Question 4

Vital capacity

Answer 4

The greatest amount of air that can be pass into and out of the lungs by the most forceful inspiration and expiration

Question 5

Tidal volume

Answer 5

The amount of air inspired and expired with each breath.

Question 6

Components of the respiratory system

Answer 6

Larynx, trachea, bronchus, intercostal muscles, bronchioles, ribs, alveoli, left lung, diaphram and diaphram muscle.

Question 7

Diaphram

Answer 7

When breathing in it tightens and lowers and changes from a dome to a flatter shape. Relaxes when we breathe out and moves back up to a dome shape. This opens the lungs and creates a vaccum so air can rush in and out.

Question 8

Pathway of air

Answer 8

Passes through the larynx and trachea into the two bronchi which passes it onto the lungs. Bronchioles follow out from bronchi and form millions of alveoli sacs.

Question 9

In the alveoli

Answer 9

Oxygen passes into the blood so that it can be transported around the body

Question 10

Gas exchange

Answer 10

Alveoli are surrounded by capillaries. Haemoglobin inside red blood cells binds to oxygen, which diffuses into the blood so it can be transported around the body to be deposited in the living cells. Chemical reactions combine glucose with oxygen to release energy.

Question 11

Oxygen debt

Answer 11

The amount of oxygen needed at the end of a physical activity to break down any lactic acid is known as oxygen debt. It also comes from anaerobic exercise (like sprinting). It is the amount of oxygen needed to oxidise lactic acid to carbon dioxide and water.

Question 12

How the respiratory system helps the cardiovascular system

Answer 12

An efficient respiratory system aids the cardiovascular system by providing a constant supply of oxygen for the muscles and by removing carbon dioxide.
During exercise, the body needs to take in a sufficient amount of oxygen and eliminate the carbon dioxide produced by the muscles while they are working.

Question 13

Anaerobic exercise

Answer 13

Working at a high intensity level without oxygen for energy production